Seiko Cal. 6634 - 387

The Seiko 6634-387 represents an important milestone in Seiko's 1972 lineup. It features a Burgundy dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-c50e4dc7f855]

Also known as: World Timer, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

40mm

Case Thickness

12.5mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Burgundy

Jewels

23j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1972

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